Poor neighborhoods can be 'fertile soil' for crime. [=there is often a lot of crime in poor neighborhoods]
I had never set foot 'on Japanese/Italian soil' before. [=I had never been to Japan/Italy before]
Cleaning up contaminated 'soil' [=soil that has harmful chemicals in it] can be very costly.
(..) It's okay to be nervous. I am, too. Thank God, 'cause I was lying-- you might not have to wait nine months to see someone soil their pants. But I'm also really excited. I mean it. Me, too. I love you. (..)2016 TvShow: The Big Bang Theory Title: The Positive Negative Reaction Season: 9 Episode 16